rex
noun
king.
rex
1 American
[r eks, reks]
/ rɛks, rɛks /
noun
Latin.
reges
plural
Rex
2
American
[reks]
/ rɛks /
noun
Rex
3
American
[reks]
/ rɛks /
noun
Rex
British
/ rɛks /
noun
Other Word Forms
Etymology
Origin of Rex
After Christus Rex, title of a publication put out by its founders
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Majungasaurus, for example, had a heavily built skull and extremely small arms despite weighing only about 1.6 tons, roughly one fifth the weight of T. rex.
From Science Daily • May 20, 2026
It lived between 100 and 120 million years ago - around 40 million years earlier than the tyrannosaurus rex - and is about twice the size of that creature.
From BBC • May 14, 2026
One of the most famous discoveries came in 2005, when paleontologist Mary Schweitzer and colleagues reported soft tissue structures inside a Tyrannosaurus rex fossil.
From Science Daily • May 14, 2026
A new type of giant long-necked dinosaur, twice the size of a tyrannosaurus rex, has been identified up by scientists from remains dug up in Thailand.
From BBC • May 14, 2026
He slams a plastic T. rex into his favorite fire truck-toy.
From "Free Lunch" by Rex Ogle
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
